Social Media How American Express is becoming the ‘social credit card’ Since March, the credit card company has been offering customers deals for groceries, clothing, flowers, and more using Twitter hashtags. By Matt WilsonApril 24, 2012 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.